BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 153 41.7%
2 United States 131 35.7%
3 Germany 31 8.4%
4 Hong Kong 15 4.1%
5 Canada 15 4.1%
6 Netherlands 12 3.3%
7 Taiwan 4 1.1%
8 Iran, Islamic Republic of 2 0.5%
9 Macao 2 0.5%
10 Sweden 1 0.3%
11 Australia 1 0.3%